package p13;

public class Test {
/*    public static void main(String[] args) {
*//*        int $_abc=11;
        String ddd = "JavaSE";
       //char[] sss =  ddd.toCharArray();
        byte[] dd = ddd.getBytes();
        for (int i =0;i<dd.length;i++){
            System.out.println(dd[i]);
        }

           // System.out.println(sss[0]);*//*
       // int a=1,b=1,c=1,d=1; System.out.println(d+=++a*b+c--);
        StringBuffer dd = new StringBuffer();

        System.out.println();

    }*/

public static void main(String[] args) {
    int aa =3;
    int bb = 4;
    System.out.println("aa = " + aa++);
    System.out.println(bb+=bb);

     Integer a = null;
    if (a != null) {
        System.out.println();
    }


    StringBuffer stringBuffer = new StringBuffer("ccccc");
    String sa =stringBuffer.toString();

    String fff = "vvv";
    stringBuffer.toString();



}
}
